Mounting means for circuit breakers or the like



F. FARRELL 2,547,156

MOUNTING MEANS FOR CIRCUIT BREAKERS OR THE LIKE April 3, 1951 OriginalFiled Nov. 20, 1943 l w w I INVENTOR. Hd E7" 76% Patented Apr. 3, 1951MOUNTING MEANS FOR CIRCUIT BREAKER-S OR THE LIKE Fred Farrell, CedarRapids, Iowa, assignor to Electrical Engineers Equipment Company,Melrose Park, 111., a corporation of Illinois Original applicationNovember 20, 1943, Serial Divided and this annIELaf-iOH November 19,1945, Serial No. 629,423

3 Claims. I

The present invention relates to an improvement in mounting means for acircuit breaker and more particularly to a circuit breaker of theautomatic opening and reclosing type.

The present application is a, division of earlier application Serial No.511,019, filed November 20, 1943, now Patent No. 2,506,546. May 2, 1950,for Circuit Breaker.

A switch or circuit breaker of the above type should be readily andsafely removable from service or be replaced in service withoutdeenergizing the line and without subjectin the operator to the hazardof too close proximity to a dangerous electric circuit, so that theswitch contacts and. associated controlling mechanism requiring repairor adjustment, due to wear on the various parts and stresses occasionedby service may be readily attended to b a repairman. It is an object ofmy invention to provide a mounting means primarily for use with anautomatic reclosing switch having suitably associated insulatorscomprising the stationary part or section of the switch forincorporation. in the line, and a removable housing section comprisingthe switch contacts and associated controllin mechanism in which sizeweight of the removable housing section. are sufficiently small to bewithin the physical scope of an operator or repairman to manually removeor replace by the use of an insulated hook stick 0r pole.

Further objects, advanta es and features of my invention will appearfrom the detail descrip tion.

Now, in order to acquaint those skilled in the art with the manner ofconstructing and utilizing mounting means in accordance with my invention, I shall describe in conjunction with the accompanying drawingsa, preferred embodiment of the same.

Figure 1 is a mounting means for a side ele vational view of a circuitbreaker constructed in accordance with my invention; and

Figure 2 is a plan View of the mounting means and circuit breaker ofFigure 1.

The mounting means of my invention comprises in general a stationarymounting frame, insulated for supporting a removable housing section,electrical terminals for the line wires and for engaging the contacts ofthe removable housing section, and electrical conducting links forbypassing the removable housing section. The mounting frame as shown inthe drawing comprises a channel member 254 to which is rigidly fixedframe member 255 assembled in the member 25 and extend at substantiallyright angles to the plane of the mounting frame with a center to centerspacing coinciding with center to center spacing of the insulatinghousings 9 it? of the removable section or housing portion of the switchshown in the drawing. The insulated housings 9 and i enclose suitableswitch members, for example, as described in my above identifiedapplication. Supporting brackets E62 and 253 are assembled on the otherends of insulators 259 and 250, respectively, and electrical terminalmembers 254 and 255 are assembled to the brackets 2:32 and 263respectively by the terminal bolts 23% and 257. The terminal bolts 2%and 25? are also utilized for form'- ing terminals for the line wires.

The lower ends of the terminal elements 254 and 255 are of substantiallv form to engage in. the openings 213 and 2'59 of switch contacts l and3 in the insulated housings Q and :9, respectively, and also act as asupporting means for the removable housing section of the circuitbreaker shown.- In addition they form electrical contacts with the lips280 with which the contacts '5 and 8 are formed.

The insulator 25! at the lower end of the mounting frame 255 has anangle bracket memher 215 of a clamping means 28| rigidly assembled atits outer end. A stud 2T6 is-threadedly engaged in the member Hi5. Aslotted bracket member 22?? forming another element of the clampingmeans is fixed to the base 249 of the removable housing section. and isso located in relation to the bracket member 2'45 and the stud 216, thatwhen the removable housing section has been assembled with thestationary section with the fixed contacts l and 3 engaged over thecurved. ends of terminal elements 264 and 2%, the stud Zlfi will engagein the slot of bracket 21?, and the removable housing section will beheld rigidly in place by tightening the stud 215. The lower end of stud2'56 is of square cross section for nugly fitting into a comformablyshaped recess in the end of an insulated hook stick or the like formanipulation by an operator.

A conducting link 2358 is hinged at 259 in electrical contact with theupper end of the terminal element 254 and a stud 212 is carried at theopposite end thereof. A conducting link 27! ishinged at 270 inelectrical contact with the upper end of the terminal element 285. lherelative lengths of links 268 and 271 are such that they may be movedinto contactin position with each other with stud 212 of link 238disposed in slot 2'53 formed in the outer end of link 21!. Rigidelectrical contact is maintained therebetween by tightening of stud 272.The end of stud 272 is formed like stud 218 for engagement with therecessed end of the aforementioned insulated hook stick or the like toprovide for safe manipulation by the operator. A stop lu 274 is formedon terminal 284 in position so that when the link 268 is moved intoengagement therewith, the free end of the link 288 is then in positionfor the slot 273 of link 27! to engage the shank of stud 2T2 carried bylink 268. It is therefore possible for an operator to close the linecircuit through links 268 and 271i and thereby'allow opening, closing,removal, or replacement of the removable housing section enclosing acircuit breaker or the like without interrupting the line current.

In the preferred form of my invention a prong member 250 is fixed to thebase plate 249 to extend downwardly, and it has an outer end portion ofsquare cross section, like studs 272 and 278, for snug fittingengagement with the recessed end of the previously mentioned insulat- 1ed hook stick. Other stud members, such as shown at MS and [83 forcertain of the instrumentalities of the circuit breaker enclosed withinthe removable housing section, and the outer end of a worm gear shaft l3for a spring motor for the breaker, are also preferably provided withouter end portions of the same size and configuration as outer endportions of studs 272 and 216, and prong member 253, so that all of themmay be engaged with a common hook stick.

In View of the construction described, the removable housing section isadapted to be supported on a hook stick by disposing the prong member250 in the recessed end of the hook stick. The hook stick may then besuitably manipulated to mount and dismount the removable housingsection.

While I have shown what I consider to be a preferred embodiment of myinvention it will be understood that various details, rearrangements,and modifications may be made therein without departing from the spiritand scope of the invention.

I claim:

1. A mounting means for an automatic circuit breaking switch or the likehaving a pair of spaced switch contacts, comprisin a mounting frame forsupporting the switch, and means providing a three-point mounting of theswitch upon said frame comprising, a pair of terminals carried by saidframe and spaced correspondingly to the spacing of said switch contacts,said switch contacts and said terminals being formed to provide atwo-point suspension mounting of the switch upon said mounting frame,clamping means between the mounting frame and the switch providing thethird mounting point for the latter, and a pair of blade members eachpivotally mounted at one end thereof to one each of said terminals, saidblades being adapted to be positioned to engage the other ends thereofwith each other to shunt said switch.

2. Mounting means for a switch or the like having a pair of spacedswitch contacts comprising, a mounting frame for supporting the switch,means providing a three point mounting of the switch upon the mountingframe comprising, a pair of terminals carried by said mounting frame andspaced correspondingly to the spacing of said switch contacts, saidcontacts and said terminals being formed to provide a two pointsuspension mounting of said switch upon said mounting frame, clampingmeans providing the third mounting point comprising a bracket membercarried b said mounting frame, and a bracket member adapted to becarried by said switch, a bolt having its outer end formed to be engagedby a hook stick or the like for drawing said bracket members together toprovide pressure contact between said terminals and said switchcontacts, and a projection on said switch adapted to be engaged by ahook stick orthe likefor manually positioning said switch upon saidmounting frame. W i

3. Moimting means for a switch or the like having a pair of spacedcontacts comprising, a mounting frame for supporting said switch,

means providing a three point mounting of said switch upon said mountingframe comprising, a pair of terminals carried by said mounting frame andspaced correspondingly to the spacing of said switch contacts, saidcontacts and said terminals being formed to provide a two pointsuspension mountin of said switch upon said mounting frame, clampingmeans providing the third mounting point comprising, a bracket carriedby said mounting frame, and a bracket member carried by said switch, abolt for securing said bracket members together providing pressurecontact between said terminals and said switch contacts, a projection onsaid switch by which it is positionable upon said mounting frame, and apair of blade members pivotally mounted at one end of each thereof toone of each of said terminals, a bolt carried by the other end of one ofsaid blade members for securing the opposite ends of said blade membersto each other, and the outer ends of said bolt and projection beingformed to be engaged by a hook stick or the like.

FRED FARRELL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,744,200 Bakken Jan.'21, 19302,025,321 Walsh Dec.'24,'1935 2,141,898 Bellm Dec. 27, 1938 2,238,636Flurscheim et a1. Apr. 15,. 1941 2,318,030 Thompson May 4, 19432,331,778 Hill Oct; 12, 1943 I FOREIGN PATENTS Number Country Date358,944 Great Britain Oct. 15, 1931 434,032 Great Britain Aug. 26, 1935

